On Tue, Jan 5, 2016 at 1:28 PM, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: > On 5 January 2016 at 11:24, Cristina Georgiana Opriceana wrote: >> Hello, >> >> I am trying to add a new gimple_opt pass to gcc 5.2. I wrote a simple >> test code to register a new pass that also has a flag. >> >> I added the pass in passes.def and also declared it in tree-pass.h. I >> recompiled gcc and it seems that my pass gets called (I printed some >> output in the execute() function) when compiling gcc itself, but not >> if I use gcc on an external file, for e.g: >> >> I expect that whenever I call: >> >> gcc -fsafestack file.c >> >> the pass would also be run on the code, but instead nothing happens. > > If this is an optimization pass then you need to enable optimization, > using the -f option isn't sufficient. See > https://gcc.gnu.org/wiki/FAQ#optimization-options Indeed, that was the problem! Thanks a lot! Cristina